British retailer Booths expects all new stores to feature R744

By Alexandra Maratou, Nov 29, 2012, 18:22 2 minute reading

With refrigerant gas leaks accounting for 13% of its overhead footprint and 2.3% of the total footprint, British retailer Booths expects all of its new refrigeration systems to be CO2-based. One of the latest examples is the Booths store at MediaCityUK, a major regeneration project situated on a former dockland site at Salford Quays in Manchester, UK, and one of the first community developments to receive the BREEAM Excellent accreditation for sustainability.

Eliminating the need for using climate-warming f-gases, an advanced transcritical CO2 refrigeration system caters for refrigeration needs of the Booths MediaCityUK store, which covers 15,000 square feet (about 1,400 square metres) and includes a butchery, fishmonger, delicatessen, cheese-monger, and florist.

Hamilton-Clark designed, procured and project-managed the installation of the system, and achieved further improvements in efficiency and energy consumption by incorporating a heat recovery system which recovers the heat expelled from the refrigeration system and directs it into air handling units, providing heat to the store and hot tap water.

Moreover, to comply with stringent noise restrictions in place, an inbound refrigeration condenser/gas cooler has been designed to reject the excess heat in the summer months.

Tri-generation at heart of MediaCityUK’s sustainability

MediaCityUK was one of the first developments to use the BREEAM Communities methodology and to receive the ‘Excellent’ accreditation.

One of the most notable environmental features employed to meet the BREEAM Communities criteria was a tri-generation energy system, which provides the development with heating and cooling through a gas fired Combined Heat and Power unit, utilising water from the Manchester Ship Canal. Several of the buildings on the site benefit from the tri-generation scheme, linked to a community trust to ensure cheap heating and energy across the development. The scheme alone saves around 20,000 tonnes of CO2 annually.

Moreover, all buildings on the site need to be BREEAM 'Very Good' or 'Excellent' certified.

Refrigerant gas leaks account for 13% of Booths’ overhead

According to Booths latest ‘Greenhouse Gas Footprint Report’ covering years 2010 and 2011, refrigerant gas leaks accounted for 5,780 tonnes CO2e per year, representing 13% of the overhead and 2.3% of the total footprint. This is a 32% increase since 2009, reflecting two significant leakage incidents in 2011.

Refrigeration in total (electricity and gas leaks together) accounts for 31% of the overhead and 5.5% of Booths’ total footprint.

To reduce the footprint of refrigeration, Booths has over the past couple of years been working to improve the refrigeration systems in some stores, including moving to CO2 as the refrigerant gas and a range of energy efficiency improvements such as fitting doors to retail fridges, or implementing heat recovery systems. 

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By Alexandra Maratou

Nov 29, 2012, 18:22




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